map -package:containers -package:case-insensitive -package:integration -package:invertible -is:exact -package:charset is:exact -package:Cabal-syntax -package:base-compat-batteries -package:monoidal-containers -package:os-string package:aeson

map :: (a -> b) -> KeyMap a -> KeyMap b
aeson Data.Aeson.KeyMap
Map a function over all values in the map.